Etsushi Yamazaki

According to our database, Etsushi Yamazaki authored at least 44 papers between 2012 and 2026.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of four.

2026

Simple Adaptive Scheme for Test-Pattern Generation in LR-FEC Inner Code with Chase-2 Decoding.

Shuto Yamamoto, Shuto Sugawara, Etsushi Yamazaki

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2026

Mode-Resolved Longitudinal Power and MDL Monitoring in Multi-Mode Fiber Transmission.

Minami Takahashi, Takeo Sasai, Megumi Hoshi, Masanori Nakamura, Akira Kawai, Kohki Shibahara, Takayuki Kobayashi, Yutaka Miyamoto, Etsushi Yamazaki

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2026

Closed-form Expression for Spatial Correlation Function of Nonlinear Fiber Propagation and Its Applications to Longitudinal Power Monitoring.

Takeo Sasai, Etsushi Yamazaki

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2026

First Coherent DSP and Pluggable Transceiver Capable of Distance-Resolved, Longitudinal Power Monitoring.

Takeo Sasai, Yukinobu Nakajima, Minami Takahashi, Runa Kaneko, Masanori Nakamura, Asuka Matsushita, Fukutaro Hamaoka, Etsushi Yamazaki

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2026

Optimal Spatial Step Size in Longitudinal Power Monitoring.

Runa Kaneko, Takeo Sasai, Etsushi Yamazaki

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2026

High-Symbol-Rate 192-GBaud Signal Transmission in S+C+L Band over 2000 km with Net Bitrate of 102.8 Tb/s.

Fukutaro Hamaoka, Masanori Nakamura, Kosuke Kimura, Hiroto Kawakami, Shimpei Shimizu, Takayuki Kobayashi, Yutaka Miyamoto, Etsushi Yamazaki

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2026

2025

200-Gbaud PAM4 O-Band Transmission Using Advanced MLSE with Simple-Soft-Output Scheme and Turbo Product Codes.

Shuto Yamamoto, Hiroki Taniguchi, Masanori Nakamura, Etsushi Yamazaki

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2025

SNR of Fiber-Longitudinal Power Monitor.

Takeo Sasai, Etsushi Yamazaki, Sze Yun Set, Shinji Yamashita

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2025

628 Gb/s Net Bitrate IMDD Transmission Using Ultra-broadband InP-DHBT-based Electrical Mixer with Upper-sideband Gain-enhanced Mode.

Masanori Nakamura, Teruo Jyo, Munehiko Nagatani, Hitoshi Wakita, Miwa Mutoh, Yuta Shiratori, Hiroki Taniguchi, Shuto Yamamoto, Fukutaro Hamaoka, Etsushi Yamazaki, Takayuki Kobayashi, Hiroyuki Takahashi, Yutaka Miyamoto

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2025

Visualizing Longitudinal Evolution of Forward- and Backward-Raman-Amplified Power and Gain.

Runa Kaneko, Takeo Sasai, Masanori Nakamura, Fukutaro Hamaoka, Etsushi Yamazaki

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2025

DM-structure-aided Low-complexity Soft-decision Decoder for Improving Performance-complexity Tradeoffs in Short-block Length Codes.

Takeshi Kakizaki, Shuto Yamamoto, Masanori Nakamura, Etsushi Yamazaki

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2025

Net 107.7-Tb/s Triple-Band WDM Transmission Over 1200-km Single-Mode Fiber With Forward- and Backward-Pumped Distributed Raman Amplifiers.

Fukutaro Hamaoka, Kosuke Kimura, Masanori Nakamura, Takeo Sasai, Takayuki Kobayashi, Yutaka Miyamoto, Etsushi Yamazaki

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2025

Simple-Soft-Output MLSE Based on Bayesian Updating and Performance of Turbo Product Codes in High-Baudrate PAM4 Optical Transmission.

Shuto Yamamoto, Hiroki Taniguchi, Masanori Nakamura, Etsushi Yamazaki

Proceedings of the European Conference on Optical Communications, 2025

Net 400-Gb/s/lane O-band IM-DD Transmission Using 182-GBd PAM-6 with KP4+SFEC over 20-km SSMF.

Hiroki Taniguchi, Shuto Yamamoto, Masanori Nakamura, Yukinobu Nakajima, Etsushi Yamazaki

Proceedings of the European Conference on Optical Communications, 2025

Tens-Of-Metre Resolution Longitudinal Power Monitoring Over 302-Km Fibre Link.

Takeo Sasai, Minami Takahashi, Fukutaro Hamaoka, Masanori Nakamura, Shuto Sugawara, Shuto Yamamoto, Hideki Nishizawa, Yoshiaki Sone, Etsushi Yamazaki

Proceedings of the European Conference on Optical Communications, 2025

Optical Network Tomography Over Live Production Network in Multi-Domain Environment.

Takeo Sasai, Kazuya Anazawa, Dmitrii Briantcev, Devika Dass, Sumaiya Ali, Giacomo Borraccini, Yoshiharu Kobatake, Hiroyuki Ishihara, Eoin Kenny, Garwin Liu, Toru Mano, Masanori Nakamura, Hideki Nishizawa, Yoshiaki Sone, Etsushi Yamazaki, Yoshiaki Kisaka, Koichi Takasugi, Koji Asahi, Marco Ruffini, Daniel C. Kilper

Proceedings of the European Conference on Optical Communications, 2025

651-Gb/s Net Bitrate IMDD Transmission Using Electrical Bandwidth Multiplexing and Demultiplexing Techniques Based on Ultra-Broadband InP-DHBT Mixers.

Masanori Nakamura, Munehiko Nagatani, Teruo Jyo, Hitoshi Wakita, Miwa Mutoh, Yuta Shiratori, Fukutaro Hamaoka, Hiroki Taniguchi, Shuto Yamamoto, Etsushi Yamazaki, Takayuki Kobayashi, Hiroyuki Takahashi, Yutaka Miyamoto

Proceedings of the European Conference on Optical Communications, 2025

Net Bitrate of $2.52-Tb/s/\lambda$ 120-km Single-Channel Transmission and $>\text{2-Tb/s/}\lambda \text{ 1040-km}$ WDM Transmission using InP-DHBT-Based All-Electronically Multiplexed 248-GBd Transmitter.

Masanori Nakamura, Fukutaro Hamaoka, Munehiko Nagatani, Hitoshi Wakita, Teruo Jyo, Yuta Shiratori, Etsushi Yamazaki, Hiroyuki Takahashi, Takayuki Kobayashi, Yutaka Miyamoto

Proceedings of the European Conference on Optical Communications, 2025

Block-Wise MLSE Utilizing Periodic Pilot Symbols for Parallel Implementation on Digital Coherent Receiver.

Yukinobu Nakajima, Hiroki Taniguchi, Shuto Yamamoto, Masanori Nakamura, Etsushi Yamazaki

Proceedings of the European Conference on Optical Communications, 2025

Impact of Carrier Phase Recovery on Longitudinal Power Monitoring.

Runa Kaneko, Takeo Sasai, Masanori Nakamura, Etsushi Yamazaki

Proceedings of the European Conference on Optical Communications, 2025

Robust Fibre Longitudinal Power Monitoring with Few Measurements Using Two-Stage Sparse Regularization.

Hiroyuki Ishihara, Takeo Sasai, Toru Mano, Atsushi Yamamoto, Hideki Nishizawa, Etsushi Yamazaki, Yoshiaki Sone

Proceedings of the European Conference on Optical Communications, 2025

Long-Haul 2000-Km Single-Mode Fibre Transmission with Net Bitrate of 105.6 Tb/S in S+C+L Band Using Low-Noise Forward-Pumped Distributed Raman Amplification.

Fukutaro Hamaoka, Hiroto Kawakami, Kosuke Kimura, Masanori Nakamura, Shimpei Shimizu, Takayuki Kobayashi, Yutaka Miyamoto, Etsushi Yamazaki

Proceedings of the European Conference on Optical Communications, 2025

2024

Optimization of iterative Chase soft decoder based on cross entropy minimization.

Etsushi Yamazaki, Shinya Sugiura

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2024

Advanced MLSE with Simple Soft Output Achieving High NGMI for SD-FEC in IM-DD Transmission with Severe Bandwidth Limitation.

Shuto Yamamoto, Hiroki Taniguchi, Masanori Nakamura, Akira Masuda, Etsushi Yamazaki

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2024

4-lambda LAN-WDM 1.6-Tb/s 2-km Transmission with Nonlinear Maximum Likelihood Sequence Estimation.

Hiroki Taniguchi, Masanori Nakamura, Fukutaro Hamaoka, Shuto Yamamoto, Yutaka Miyamoto, Etsushi Yamazaki

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2024

Recent Advances in Digital Longitudinal Monitoring of Fiber-Optic Link.

Takeo Sasai, Minami Takahashi, Runa Kaneko, Yoshiaki Sone, Masanori Nakamura, Etsushi Yamazaki

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2024

4D Optical Link Tomography: First Field Demonstration of Autonomous Transponder Capable of Distance, Time, Frequency, and Polarization Resolved Monitoring.

Takeo Sasai, Giacomo Borraccini, Yue-Kai Huang, Hideki Nishizawa, Zehao Wang, Tingjun Chen, Yoshiaki Sone, Tatsuya Matsumura, Masanori Nakamura, Etsushi Yamazaki, Yoshiaki Kisaka

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2024

Fiber Longitudinal Monitoring of Inter-band-SRS-induced Power Transition in S+C+L WDM Transmission.

Runa Kaneko, Takeo Sasai, Fukutaro Hamaoka, Masanori Nakamura, Etsushi Yamazaki

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2024

Low-Complexity SD-FEC based on Channel-Polarized Multistage Codes for Data Center Networks.

Takeshi Kakizaki, Masanori Nakamura, Fukutaro Hamaoka, Seiji Okamoto, Etsushi Yamazaki

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2024

110.7-Tb/s Single-Mode-Fiber Transmission over 1040 km with High-Symbol-Rate 144-GBaud PDM-PCS-QAM Signals.

Fukutaro Hamaoka, Masanori Nakamura, Takeo Sasai, Shuto Sugawara, Takayuki Kobayashi, Yutaka Miyamoto, Etsushi Yamazaki

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2024

S+C+L WDM Coherent Transmission with >1-Tb/s/λ Signals.

Fukutaro Hamaoka, Masanori Nakamura, Takayuki Kobayashi, Yutaka Miyamoto, Etsushi Yamazaki, Yoshiaki Kisaka

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2024

2023

0.77-dB Anomaly Loss Localization Based on DSP-Based Fiber-Longitudinal Power Estimation Using Linear Least Squares.

Takeo Sasai, Masanori Nakamura, Etsushi Yamazaki, Hideki Nishizawa, Yoshiaki Kisaka

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2023

Dither-free Auto Bias Control Technique for In-service Optical IQ modulator Using Reference Pulsed Light.

Hiroto Kawakami, Yoshiaki Kisaka, Etsushi Yamazaki

Proceedings of the 28th Asia Pacific Conference on Communications, 2023

2022

Proposal of Linear Least Squares for Fiber-Nonlinearity-Based Longitudinal Power Monitoring in Multi-Span Link.

Takeo Sasai, Etsushi Yamazaki, Masanori Nakamura, Yoshiaki Kisaka

Proceedings of the 2022 27th OptoElectronics and Communications Conference (OECC) and 2022 International Conference on Photonics in Switching and Computing (PSC), 2022

Precise Longitudinal Power Monitoring over 2, 080 km Enabled by Step Size Selection of Split Step Fourier Method.

Takeo Sasai, Masanori Nakamura, Etsushi Yamazaki, Yoshiaki Kisaka

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2022

Impact of Local Oscillator Phase Noise on Long-Haul Transmission of 120-Gbaud Digital Sub-Carrier Signals.

Kohei Saito, Masanori Nakamura, Takeo Sasai, Takeshi Kakizaki, Fukutaro Hamaoka, Takayuki Kobayashi, Etsushi Yamazaki, Yoshiaki Kisaka

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2022

2021

Revealing Raman-amplified Power Profile and Raman Gain Spectra with Digital Backpropagation.

Takeo Sasai, Masanori Nakamura, Takayuki Kobayashi, Hiroto Kawakami, Etsushi Yamazaki, Yoshiaki Kisaka

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2021

2020

Simultaneous Detection of Anomaly Points and Fiber Types in Multi-Span Transmission Links Only by Receiver-Side Digital Signal Processing.

Takeo Sasai, Masanori Nakamura, Seiji Okamoto, Fukutaro Hamaoka, Shuto Yamamoto, Etsushi Yamazaki, Asuka Matsushita, Hideki Nishizawa, Yoshiaki Kisaka

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2020

Digital Backpropagation for Optical Path Monitoring: Loss Profile and Passband Narrowing Estimation.

Takeo Sasai, Masanori Nakamura, Etsushi Yamazaki, Shuto Yamamoto, Hideki Nishizawa, Yoshiaki Kisaka

Proceedings of the European Conference on Optical Communications, 2020

2019

Low Noise Non-Linear Equalization Using Neural Networks and Belief Propagation.

Etsushi Yamazaki, Nariman Farsad, Andrea Goldsmith

CoRR, 2019

2018

Experiments on Stimulated Raman Scattering in S- and L-bands 16-QAM Signals for Ultra-Wideband Coherent WDM Systems.

Kyo Minoguchi, Seiji Okamoto, Fukutaro Hamaoka, A. Matsushita, Masanori Nakamura, Etsushi Yamazaki, Yoshiaki Kisaka

Proceedings of the Optical Fiber Communications Conference and Exposition, 2018

150.3-Tb/s Ultra-Wideband (S, C, and L Bands) Single-Mode Fibre Transmission over 40-km Using >519Gb/s/A PDM-128QAM Signals.

Fukutaro Hamaoka, Kyo Minoguchi, Takeo Sasai, Asuka Matsushita, Masanori Nakamura, Seiji Okamoto, Etsushi Yamazaki, Yoshiaki Kisaka

Proceedings of the European Conference on Optical Communication, 2018

2016

Power efficient DSP implementation for 100G-and-beyond multi-haul coherent fiber-optic communications.

Osamu Ishida, Kazuhito Takei, Etsushi Yamazaki

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2016

2012

100-Gb/s optical transport network and beyond employing digital signal processing.

Etsushi Yamazaki, Masahito Tomizawa, Yutaka Miyamoto

IEEE Commun. Mag., 2012